Error Code 29 indicates a “Heat Exchanger Outlet Temperature Too Low” condition on your Rheem Continuous Flow Water Heater. This issue often arises from sensor faults, insufficient gas supply, or heat exchanger problems.
Turn off power at the isolation switch and close all hot taps immediately. Given the complexity of heat exchanger-related issues, professional evaluation and repairs are necessary. Contact Hilton Plumbing promptly to restore your unit’s functionality safely.
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